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2011 International Conference on Electric and Electronics, EEIC 2011

作者： Wang, Hua-Bin Tao, Liang Hu, Xue-You Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei Anhui 230039 China

ISBN: (纸本)9783642217463

Based on the Retinex method and the SIFT feature analysis, this paper presents a novel algorithm for hand vein recognition. First of all, the principle of the near-infrared hand vein image acquisition is introduced. Secondly, the Retinex method is used to normalize hand vein images, and the adaptive smoothing method is selected to estimate the illumination. Then gray cosine transform is used to enhance the discrimination of the skin and the vein in hand vein images. Thirdly, the SIFT feature analysis algorithm is used to extract the feature of hand vein. Finally, the match method of two hand vein images based on SIFT is given. A hand vein recognition system in Microsoft VC6.0 is also developed and the experimental results demonstrate the high efficiency of the proposed algorithm in runtime and correct recognition rate. © Springer-Verlag Berlin Heidelberg 2011.

关键词： Cosine transforms

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A granularity attribute reduction method based on binary discernibility matrix

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International Journal of Advancements in computing Technology 2012年第12期4卷 213-221页

作者： Chang, Tong Shifei, Ding Hong, Zhu Hongjie, Jia Jian, Wang School of Computer Science and Technology China University of Mining and Technology Xuzhou 221116 China Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Geomatics College Shandong University of Science and Technology Qingdao 266510 China

At present, most of the attribute reduction algorithms based on granularity are simply computing the granularity of knowledge. Repeated calculation will increase the time complexity. Binary discernibility matrix is used to express binary form, which has a clear ascension whether in space or in time than the traditional discernibility matrix efficiency. On the basis of granularity-based attribute reduction, a method is proposed to preprocess the dataset by using binary discernibility matrix. Firstly, find the core attribute and a minimal reduction. Then use the granularity thought to calculate each particle of the importance of attributes. Most important is joined to the reduction set, thereby achieving the attributes reduction. The example analysis shows that the method can improve the performance of the traditional attribute reduction algorithms effectively. It is a feasible approach to reduce attributes.

关键词： Rough set theory

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A support vector extraction method based on clustering membership

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2012年第13期6卷 1-10页

作者： Qi, Bingjuan Ding, Shifei Huang, Huajuan Yu, Junzhao Wang, Jian School of Computer Science and Technology China University of Mining and Technology Xuzhou 221116 China Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Science Beijing 100190 China Geomatics College Shandong University of Science and Technology Qingdao 266510 China

Traditional support vector machine has disadvantages of slow training speed and great time consumption when dealing with large-scale datasets. This paper proposes a support vector extraction method based on clustering membership, which preprocesses the training datasets and extracts all possible support vectors for SVM training according to the memberships. Considering the training datasets may be linear or nonlinear, this paper severally uses FCM and KFCM to extract support vectors. Experiment results show that the method proposed in this paper can improve the training speed greatly in the condition of maintaining the classification accuracy.

关键词： Support vector machines

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Image sets alignment for Video-Based Face Recognition

Image sets alignment for Video-Based Face Recognition

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Conference on Computer Vision and Pattern Recognition (CVPR)

作者： Zhen Cui Shiguang Shan Haihong Zhang Shihong Lao Xilin Chen School of Computer Science and Technology Huaqiao University Xiamen China Key Laboratory of Intelligent Information Processing of Chinese Academy of Sciences (CAS) Institute of Computing Technology CAS Beijing China Omron Social Solutions Company Limited Kyoto Japan

Video-based Face Recognition (VFR) can be converted to the matching of two image sets containing face images captured from each video. For this purpose, we propose to bridge the two sets with a reference image set that is well-defined and pre-structured to a number of local models offline. In other words, given two image sets, as long as each of them is aligned to the reference set, they are mutually aligned and well structured. Therefore, the similarity between them can be computed by comparing only the corresponded local models rather than considering all the pairs. To align an image set with the reference set, we further formulate the problem as a quadratic programming. It integrates three constrains to guarantee robust alignment, including appearance matching cost term exploiting principal angles, geometric structure consistency using affine invariant reconstruction weights, smoothness constraint preserving local neighborhood relationship. Extensive experimental evaluations are performed on three databases: Honda, MoBo and YouTube. Compared with competing methods, our approach can consistently achieve better results.

关键词： Manifolds Face Image matching Face recognition Image reconstruction Video sequences Computational modeling

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Modeling and testing embedded system by model checking

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International Journal of Advancements in computing Technology 2012年第17期4卷 18-27页

作者： Sun, Fuzhen Song, Dandan Liao, Lejian Li, Guoqiang Beijing Engg. Res. Centre of High Volume Language Information Processing and Cloud Computing Appl Beijing Key Laboratory of Intelligent Information Technology School of Computer Science Beijing Institute of Technology China School of Computer Science and Technology Shandong University of Technology China

Software testing is the key validation technique used by industry up to today, but remain error prone and expensive cost. Automatically generating test cases from formal models of the system under test is a promising improvement approach to cut down the testing cost. This paper introduces a technique that automatically generate real-time conformance test cases from timed automata specifications. First, both reactive system and its environment is modeled by restricted automata with the notion of deterministic, input enabled and output urgent. Then demonstration is given to show how to efficiently generate real-time test cases with optimal execution time from diagnostic trace. Finally, we formally specify user's single purpose or coverage criteria to convert the test case generation problem into a reachability problem. This approach is implemented using model checkers as test case generation tools and experiment results on three different coverage criteria specifications show feasibility and effectiveness of our technique.

关键词： Model checking

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Ant-based clustered multi-path QoS routing for wireless multimedia sensor networks

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Journal of Information and Computational Science 2012年第16期9卷 4927-4935页

作者： Rao, Yuan Fu, Leiyang Yuan, Changan Shao, Xing Zhu, Jun College of Information and Computer Anhui Agricultural University Hefei 230001 China Science Computing and Intelligent Information Processing of Guangxi Higher Education Key Laboratory Guangxi Teachers Education University Nanning 530023 China School of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China

The contradiction exists between high QoS requirements and the constrained resources in wireless multimedia sensor networks (WMSNs). To support multimedia applications, a novel routing scheme, ant-based clustered multi-path QoS routing (ACMQ), is presented. Aiming at unequal clustering, sensor nodes compete in cluster heads (CHs) using both the energy heterogeneity of neighbor sensors and the various cluster radius varying with their distance from the Sink. Moreover, ACMQ employs the M/M/1 queuing model to evaluate the statistical buffer occupancy. Furthermore, the migrating strategy of ant is proposed to construct multi-path routing table considering the buffer occupancy, the residual energy and the geographic position of relay CHs. Simulation results show that ACMQ outperforms AntSensNet in terms of lifetime, routing overhead, end-to-end delay, delay jitter and packet loss ratio. © 2012 Binary Information Press.

关键词： Sensor nodes

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Feature based stitching of a clear/blurred image pair

Feature based stitching of a clear/blurred image pair

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International Conference on Multimedia and signal processing

作者： Fang, Xianyong MOE Key Lab. of Intelligent Computing and Signal Processing Anhui University Hefei China

ISBN: (纸本)9780769543567

Clear image stitching becomes mature now, but how to stitch blurred images with clear ones is still tough, mainly because of the ill-posed image deblurring. Existing deblurring methods assume spatial-invarint blur kernel, pixelwise constant blur kernel or planar camera motion. But these assumptions are difficult to hold in the real blurred image which is a spatial-variant blurred image by 3D camera motion. To overcome such limits for stitching blurred image, in this paper, we present a new feature based framework of stitching a clear/blurred image pair. It is inspired by recently proposed projetive warping models depicting the camera movement embedded in the capturing process of the blurred image. Our main contribution is a feature based algorithm for kernel estimation using the overlapped clear/blurred image pair. Experimental results demonstrate the effectiveness of the proposed stitching method.© 2011 IEEE.

关键词： Cameras

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Approximation operators based on vague relations and roughness measures of vague sets

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Frontiers of Computer Science 2011年第4期5卷 429-441页

作者： Mingfen WU Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China School of Information Science Wuyi University Jiangmen 529020 China

Rough set theory and vague set theory are powerful tools for managing uncertain, incomplete and imprecise information. This paper extends the rough vague set model based on equivalence relations and the rough fuzzy set model based on fuzzy relations to vague sets. We mainly focus on the lower and upper approxima- tion operators of vague sets based on vague relations, and investigate the basic properties of approximation opera- tors on vague sets. Specially, we give some essential characterizations of the lower and upper approximation operators generated by reflexive, symmetric, and transi- tive vague relations. Finally, we structure a parameterized roughness measure of vague sets and similarity measure methods between two rough vague sets, and obtain some properties of the roughness measure and similarity measures. We also give some valuable counterexamples and point out some false properties of the roughness measure in the paper of Wang et al.

关键词： vague relation vague approximation space,rough vague set roughness measure similarity measure

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Reconstructing 3D human poses from uncalibrated monocular images with strong perspective effects

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Journal of Computational Information Systems 2012年第15期8卷 6437-6445页

作者： Chen, Shu Peng, Xiaoning School of Information Engineering Xiangtan Universtiy Xiangtan 411105 China Key Laboratory of Intelligent Computing and Information Processing Ministry of Education Xiangtan 411105 China School of Information Science and Engineering Central South University Changsha 410083 China Department of Computer Science and Technology Huaihua College Huaihua 418008 China

This paper present a geometric method to reconstruct human motion pose from 2D point correspondences obtained from uncalibrated monocular images. The proposed algorithm can handle images with very strong perspective effects, which is guaranteed by the fact that only one scale factor corresponding to the root joint in the skeleton model is required estimating. To take fully advantage of this fact, a system of two nonlinear equations with two variables to estimate the scale factor of the root joint is established, and the scale factor of the root joint is optimized by the Gauss-Newton iterative scheme. At last, a framework to reconstruct human motion pose is presented. Quantitive analysis of the experiment results based on several real monocular video sequences shows the accuracy of the scale factor as well as the accuracy of the pose reconstruction. © 2012 Binary Information Press.

关键词： Nonlinear equations

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Fusion of multi-polarimetric SAR images using Directionlets transform

Fusion of multi-polarimetric SAR images using Directionlets ...

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2nd International Conference on Multimedia Technology, ICMT 2011

作者： Zhang, Dexiang Gao, Qingwei Wu, Xiaopei Lu, Yixiang Key Lab. of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei China

ISBN: (纸本)9781612847740

An efficient SAR image fusion algorithm for multi - polarimetric images based on Directionlets transform is proposed. Directionlets transform is a new lattice-based multiscale analysis anisotropic multi-directional wavelet transform. Firstly, several polarimetric images can be decomposed into lowfrequency coefficients and high-frequency coefficients with multiscales and multi-directions using the Directionlets transform. For the low-frequency coefficients, the average fusion method is used. For the each directional high frequency sub-band coefficients, the directive contrast and the larger value of region variance information measurement is used to select the better coefficients for fusion. At last the fused image can be obtained by utilizing inverse transform for fused Directionlets coefficients. Experimental results show that compared with traditional algorithm, the proposed algorithm can get better visual effect and the significant information of original image like textures and contour details is well maintained. © 2011 IEEE.

关键词： Image fusion

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